1: 1. Base:
•Preheat the oven to 180C.
•In a small bowl, combine flour, baking powder and salt.
•Beat the egg whites with sugar to form a stiff meringue. Add egg yolks one by one and keep beating.
•Add the dry ingredients and mix well.
•Pour everything in a prepared baking tray (25x35cm), covered with baking sheet.
•Bake for 15min.
•Remove from the oven and leave to cool.
•Make the syrup from water and sugar. Combine water and sugar and cook for about 10min. after it boils.
•Pour the hot syrup over the cool base. Syrup wont penetrate straight away through, so you can pierce the base with the fork. It should be dry at the surface.

2: 2.Filling:
•Leave the butter at the room temperature.
•Combine 500ml of milk with the flour and corn starch, making sure it's smooth.
•Combine the rest of 500ml with the sugar and vanilla.
•When the milk boils, add the rest of milk mixture and mix well. When it starts to thicken, cook for just a few min. on the very low heat, mixing constantly.
•Remove from the stove and add butter then mix well. Cover the mixture with the plastic foil. Cool slightly.
•Spread evenly over the base.

3: 3.Frosting:
•In a double dish, melt the chocolate and butter.
•Pour evenly over the filling and spread without touching.
•Let it cake cool and cut in cubes. Use think knife and cut holding it vertically without piercing.